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곱셈: 3 x 21X0

1

		1	0	0
			2	9
		9	0	0
	2	0	0	0
	2	9	0	0

2

		2	2	2
			8	9
	1	9	9	8
1	7	7	6	0
1	9	7	5	8

3

		4	4	8
			6	1
		4	4	8
2	6	8	8	0
2	7	3	2	8

4

		7	8	1
			5	9
	7	0	2	9
3	9	0	5	0
4	6	0	7	9

5

		1	3	7
			2	6
		8	2	2
	2	7	4	0
	3	5	6	2

6

		5	4	5
			5	4
	2	1	8	0
2	7	2	5	0
2	9	4	3	0

7

		7	5	4
			1	3
	2	2	6	2
	7	5	4	0
	9	8	0	2

8

		5	2	8
			3	6
	3	1	6	8
1	5	8	4	0
1	9	0	0	8

9

		7	4	3
			6	4
	2	9	7	2
4	4	5	8	0
4	7	5	5	2

10

		1	8	1
			1	1
		1	8	1
	1	8	1	0
	1	9	9	1

11

		4	0	6
			2	7
	2	8	4	2
	8	1	2	0
1	0	9	6	2

12

		1	8	5
			6	0
				0
1	1	1	0	0
1	1	1	0	0

13

		4	5	6
			2	4
	1	8	2	4
	9	1	2	0
1	0	9	4	4

14

		1	4	2
			6	6
		8	5	2
	8	5	2	0
	9	3	7	2

15

		7	4	7
			4	2
	1	4	9	4
2	9	8	8	0
3	1	3	7	4

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